dr. tim

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  1. N

    Cycling with bacteria question

    Hi, I'm trying to cycle my tank with Dr. Tim's One and Only. I used an 8 oz bottle (entire bottle, shaken and inverted) for a 20g bare bottom tank. There is a lot of sediment at the bottom now. Is this normal? Can it harm fish? If I remove the sediment, will that slow the cycling process...
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